Waisetsu Missile: THE ANIMATION

Fuente: AniList

Based on the manga by Taropun. A girl who is willing to protect a boy she likes from the bully's naughty kids. The girl sells herself to be replaced by not disturbing the guy she likes anymore. The naughty guy takes advantage of this situation to be able to continue to enjoy the body of the girl... (Source: Nekopoi and Has Been Translated)